%0 Book%A Downing, Elliot Rowland,%D 1918%T The third and fourth generation; an introduction to heredity,%C Chicago, Ill.,%I The University of Chicago press%! The third and fourth generation;%L QH431 .D75%K Heredity%G English%U http://www.biodiversitylibrary.org/item/116189%R 10.5962/bhl.title.55505